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Finding the Fourth Proportional to 120,763.76, 180,944.04 and 53,195.13

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Solution

The fourth proportional to 120,763.76, 180,944.04 and 53,195.13 is: 79,703.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,763.76 : 180,944.04 = 53,195.13 : x
  2. Step 2: Convert to fraction form
    120,763.76/180,944.04 = 53,195.13/x
  3. Step 3: Cross multiply
    120,763.76x = 180,944.04 × 53,195.13
  4. Step 4: Simplify right side
    120,763.76x = 9,625,340,825.81
  5. Step 5: Solve for x
    x = 9,625,340,825.81/120,763.76
  6. Step 6: Final answer
    x = 79,703.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.